Windows 10 - No Interfaces found
How come I cannot see my Ethernet adapter? Using Version 3.0.3. It just says "No Interfaces found." I used the default installation options, and installed Nccap. I don't have nmap installed on this computer. Any helped much appreciated.
Have you tried with a more current version of Wireshark (now at 3.2.5) and npcap (now at 0.9995)?
Feature updates to Windows 10, e.g. the recent 2004 can upset the npcap integration. Usually a re-install of npcap using the latest version from npcap.org will fix things up.
As noted by @Chuckc your version of Wireshark may also be worth updating.